TCP/IP Connectivity Issue

I am not sure if this is the correct place to post this question.
I work for a company that has an intranet and very active firewall. I recently upgrade to Leopard (10.5.2) on a 2.66GHz Dual-Core Intel Xeon.
I usually have Safari, Apple Mail and access to servers/volumes active. I notice every so often my connection to the mail server and the internet stalls. I have not figure out why this is happening.
The Network panel is manually configured and it's going through the company's router (via TCP/IP). Apple Talk is active (configure automatically). 802.1X authentication is TTLS and PEAP. Proxies configured for PAC file. Ethernet is configured manually, Speed is autoselect and NTU is Standard 1500.
So far it seems that the only way to re-establish the connection is to quit the print monitor for the postscript printer I just submitted a job to and also force quote the Printer Proxy. (What is a Printer Proxy and way does it appear?). Prior to manually quitting or force quitting these two items, in the
Forec Quit Application window they have the not responding message next to them.
I am still not sure if these are causing any the problem or if it is a bug in Leopard.
Has anyone experienced something similar?

Thanks for the welcome!
Possible, but according to the customer he had his former DSL modem connected directly. That would have pulled a routable IP, with no NAT required.
...then again, "according to him" are the key words
Thanks,
Chris

Similar Messages

TCP/IP Connection Issue on Windows Server 2008 SP2

Hi All,
    We got the following error with our monitor application. Monitor application tried to make a TCP/IP connection to another server, and runs out of all local ports. We can not close these connections without
rebooting. This will happen if the windows server didn't reboot in 500 days. (We tested in our data center by some servers. )
   Please explain why it is exact 500 days??? We are looking for a solution to fix it without reboot.
Thank yoU!
Bill
TCP/IP failed to establish an outgoing connection because the selected local endpoint was recently used to connect to the same remote endpoint. This error typically occurs when outgoing connections are opened and closed at a high rate, causing all available
local ports to be used and forcing TCP/IP to reuse a local port for an outgoing connection. To minimize the risk of data corruption, the TCP/IP standard requires a minimum time period to elapse between successive connections from a given local endpoint to
a given remote endpoint.

Hi Bill,
Thank you for your post.
The event 4227 means that the application open up more ports but not closing them in timely fashion.
Windows 2008 default dynamic port range specify start port 49152 end port 65535. So you monitor it try to make connection via 65535 port.
To resolve this issue, please restart your application service or set
TcpTimedWaitDelay to a lower value via registry
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
If there are more inquiries on this issue, please feel free to let us know.
Regards,
Rick Tan

FWSM on 6500 TCP connection issues after crash on primary

I'm experiencing a rather strange issue that has me stumped.
We are running an FWSM on a 6509 with a SUP720. Firmware 3.2(18), in MultiContext Routed Mode, with shared MSFC.
Everything runs fine on this baby most of them time, however occasionally without warning and with no specific pattern the Primary node will fail (as in completely stop responding) and the secondary will takover as active.
Two get the primary up agian, I reset the hw-module and then no failover active on the secondary to return the primary as active. However, after this event, I start to experience strange issues with connectivity. Certain TCP src dst combinations will just not work. Take the following example:
A TCP/1433 connection from Inside IP: 10.3.3.196 to outside IP: 10.252.20.63, logs look like this:
2012-08-07 13:43:13:0868          + 13435          2012-08-07 13:43:09     Local5.Info     192.168.2.7     Aug 07 2012 11:31:19: %FWSM-6-302013: Built outbound TCP connection 145674175523995444 for servers:10.3.3.196/64112 (10.3.3.196/64112) to outside:10.252.20.63/1433 (10.252.20.63/1433)
2012-08-07 13:43:13:0868          + 13436          2012-08-07 13:43:09     Local5.Info     192.168.2.7     Aug 07 2012 11:31:19: %FWSM-6-302014: Teardown TCP connection 145674175523995444 for servers:10.3.3.196/64112 to outside:10.252.20.63/1433 duration 0:00:00 bytes 128 TCP Reset-O
2012-08-07 13:43:13:0868          + 13526          2012-08-07 13:43:09     Local5.Info     192.168.2.7     Aug 07 2012 11:31:19: %FWSM-6-106028: Deny TCP (Connection marked for Deletion) from 10.3.3.196/64112 to 10.252.20.63/1433 flags SYN on interface servers
2012-08-07 13:43:13:0875          + 13670          2012-08-07 13:43:10     Local5.Info     192.168.2.7     Aug 07 2012 11:31:20: %FWSM-6-302013: Built outbound TCP connection 145674175523995445 for servers:10.3.3.196/64112 (10.3.3.196/64112) to outside:10.252.20.63/1433 (10.252.20.63/1433)
2012-08-07 13:43:13:0875          + 13671          2012-08-07 13:43:10     Local5.Info     192.168.2.7     Aug 07 2012 11:31:20: %FWSM-6-302014: Teardown TCP connection 145674175523995445 for servers:10.3.3.196/64112 to outside:10.252.20.63/1433 duration 0:00:00 bytes 124 TCP Reset-O
However I create a specific ACL on the upstream routers interface, to see if I get any matches and the traffic is not even leaving the 6509. I can however ping the remote device without any issues. And I can confirm that the xlate has been built.
This connection was working fine prior to the crash, and the ACL rules are correct and do allow the connection on both the local FWSM and the remote firewall.
Currently my only resolution is to reboot the FWSM on both nodes at the same time so that we have a complete fresh start. This is not ideal!
Anyone know of issues like this? Any suggestions for workarounds or perhaps ways to troubleshoot the reason for the crash?
Thanks!
Craig

Hi Bro
Perhaps, this could be a hardware related issue concerning your Primary FWSM. However, before we can conclude that, could you upgrade your FWSM to the latest image v4.1.7?

TCP Connection Issues with OPC Server and GE Versamax

Hi there,
I have an installation of Lookout 6.0 coupled with the OPC Inductrial Automation servers. In my application, we are running two instances of the GE Versamaz Ethernet driver to communicate with two remote (over the internet) GE Fanuc Versamax PLCS.
Every few days, the two PLCs lose connectivity. It does not appear to be a LAN connectivity issue as I can still log into the PLCs using the GE software. To fix the issue, the Lookout software must be restarted.
Has this been seen by anybody else? This poses a significant problem as lookout is used to monitor the PLCS at sewage stations - each time the connections are lost we have to deploy technicians to the sites to ensure all is working.
-andrew

Hello Andrew,
When the connection is terminated are you getting any errors or alarms? If so what are they? Also you can try to replace the object that is connected to the PLC and make sure it has the correct settings. It may also be due intermittent networking issues, losing connection and not able to connect with the object again unless Lookout is restarted again. I have not heard about any such networking issues. The attached document can be used for reference.
Regards,
RMM
http://digital.ni.com/public.nsf/websearch/5ECD2AFA039B45C186256B1300621722?OpenDocument

TCP Socket connection in CLOSE_WAIT status and not getting closed

I am facing an issue with the TCP socket connections not getting closed and they are in CLOSE_WAIT status for ever.
As a part of batch process in our application, emails are sent with 4 embedded images. These images are downloaded from 3rd party site with IP say "UUU.XXX.YYY.ZZZ"
The images are embedded to email as follows
1. An URL object is created with the site url.
URL urlPhoto = new
URL("http://UUU.XXX.YYY.ZZZ/email/photos.jpg");
2.     The image cid is created with the URL object and the image name
HtmlEmail htmlEmail = new HtmlEmail();
String cid1 = htmlEmail.embed(urlPhoto,
"photo.jpg");
3.     The image cid is added to the email template by replacing the ${cid1} and the email is sent.
<td valign="top">
               <img src="cid:${cid1}" width="279" height="274">
          </td>
When a mail is sent, 4 new TCP connections are opened and are put in CLOSE_WAIT status for ever. For every mail sent 4 new connections are opened. In UNIX there is an upper limit on the number of open file handles (defaults to 1024) at any point of time. The open TCP connection has the underlying socket in CLOSE_WAIT status and is not getting closed at all. When the upper limit (1024) is reached the batch process is throwing the following exception and terminates.
Caused by: com.inet.tds.ap: java.net.SocketExceptionjava.net.SocketException: Too many open files
at com.inet.tds.am.a(Unknown Source)
at com.inet.tds.TdsDriver.a(Unknown Source)
at com.inet.tds.TdsDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at com.hcomemea.batchprocess.dataaccess.database.BaseJdbcDao.openConnection(BaseJdbcDao.java:106)
... 12 more
When I run the command lsof in UNIX which list the open file handles in the system
$ /usr/sbin/lsof -p 22933 -i | grep CLOSE_WAIT
java 22933 build_master 297u IPv6 129841943 TCP integration.com:47929->UUU.XXX.YYY.ZZZ:http (CLOSE_WAIT)
java 22933 build_master 298u IPv6 129841947 TCP integration.com:47933->UUU.XXX.YYY.ZZZ:http (CLOSE_WAIT)
java 22933 build_master 299u IPv6 129841950 TCP integration.com:47936->UUU.XXX.YYY.ZZZ:http (CLOSE_WAIT)
java 22933 build_master 300u IPv6 129841970 TCP integration.com:47952->UUU.XXX.YYY.ZZZ:http (CLOSE_WAIT)
��list of 935 connections similarly�
I tried 2 solutions
1. Got the HttpURLConnection from the URL object and invoked disconnect method on the same. But it doesn�t work.
2. Ran the batch process java program with the parameter �Dhttp.keepAlive=false to close the underlying connection but didn�t help.
I need the underlying sockets to be closed and not put in CLOSE_WAIT status after sending the mail.
Is it the problem with the embed method of HtmlEmail object not closing the underlying socket connection.
If anyone has faced this issue before, kindly let me know the possible solutions for the same ASAP.
Thank you,
Ramesh G

This sounds more like a problem due to connection pooling at middle tier/application server.
If that has been ruled out, then you might to enable DCD or set expiry time on the server.

TCP/IP connection in a loop

Dear Friends,
I am trying to make my computer with labview to communicate with another computer running VB.net application. I am basically trying to set up a TCP/IP listener. I want the VI to continuously run and send the values based on a command button. While debiggin the VB application in another computer I see that the data is sent only the first time and after that the application does not recieve any data. I am attaching the VI herewith:
Test.VI: It is the main VI
String.VI: Based on the button status I will feed different strings to the TCP connection.
I would appreciate if anyone can help me in figuring out why the connection sends data only once.
Thanks
Sankar
Attachments:
test.vi ‏28 KB
string.vi ‏13 KB

I would have to say that your problem is probably on the VB side of the equation. I don't see any "smoking gun" in your LabVIEW vi.
Take a look at your TCP read function to see what is going on.
How long are your timeouts set for on the VB side and how long does it take for the VB code to get back to waiting for the TCP Read?
How about your TCP socket connection ID on the VB side. After your read, are you possibly closing the socket or loosing the reference to it?
Does your TCP Read function return any errors? (Timeout, could not create listener, etc...)
Another possiblity is that your VB TCP function is looking for some form of termination character that it is not finding (CRLF?). The LabVIEW TCP Read function allows this mode of operation but it is not the default, I am not sure about VB.
Based on my experience with TCP, these are the things I would look at first.
I have found that the concept of TCP is fairly straight forward, however the proper and reliable management of connections is not quite as easy.
As an intermediate step, you could develop both sides of the communication in LabVIEW and stay in that mode until you are confident that you have all of the issues with sequencing, formatting, timing, etc... worked out. Once that is done, convert your TCP reader into VB code.

How to use WAN IP with port number in TCP Open Connection ?

I have a code to write / read a WiFi device server that gets DIO / AI data through a serial port. See attachment.
The device driver has a static IP of 192.168.1.10 and port 30704 for data stream. I have a router which links my laptop and this device driver in a LAN and all is fine.
But now I want to access my device driver through the internet. For this I already have done a port forwarding in my router to direct incoming requests on 30704 port to my device driver.
The issue : I cannot reach my device driver when I enter the WAN side IP of my router like 52.23.45.131 and the Port as 30704 in the TCP Open connection.
Any suggestions ?
Thanks
Raghunathan
LV2012 to Automate Hydraulic Test rigs.
Attachments:
Remote_Logger.vi ‏32 KB

Hello,
without looking at your vi:
Did you try to reach your device from an external Computer?
Because NAT Translation cant be done (by most routers) if you try to reach yourself from the inside.
I am correct that the device created a virtual Networkcard on your computer at which you can communicate locally, right?
Did you try to use another computer in your Network, to reach your computer and the attached device?
If it is not possible, try to enable Routing at your computer.
If it is possible, your router is not forwarding (or you answered at with "no" at the first question or both).
If you are using an external computer and the networkinternal connection from another PC is working and you are 100% sure the router is set up correctly, try to disable all local firewalls and test again. (if it works you need to setup a proper fwrule).
Regards
Rene

Outlook with Exchange connection issues

I am implementing a security policy which includes blocking all outbound traffic on the firewall of our network (Except normal 80, 443 etc). It seems
that if I apply this, some users aren't able to connect to exchange. This appears to be related to Outlook Anywhere. What ports would I need to allow to prevent this connection issue?

Hi
As per the information and details provided by you, to solve the Outlook with Exchange connection issues, Please follow these steps: -
Microsoft introduced
RPC over HHTP as a better way for Outlook client to connect to Exchange. The MAPI connections still use RPCs, but they encapsulate those with an HTTP connection. Since that HTTP connection is secured using SSL, it is may be
more accurate to call it RPC over HTTPS. These connections only require connectivity
over TCP port 443, which as you know is assigned to HTTPS and is normally open by
firewall admin for web servers.
Outlook Anywhere wraps
Remote Procedure Calls inside an HTTP layer to allow connectivity with the Exchange server. This simplifies the firewall administration process requiring only
the SSL port 443 to be opened to the CAS (Client Access Server) instead of several ports to the actual Mailbox Server (MBX).
I hope this information will be helpful for you.
Thanks and regards
Shweta@G

Connectivity Issues Cisco ASA 5515 in Transparent Mode

Hi,
we´re having problems with one transparent mode setup at one customer site. The ASA is equiped with a CX Module, but we´re not using it, so far in the service policy rules it was enabled and matched all traffic, but in "monitor only" mode. There is a global acl that allows any-any-IP.
Firewall-Info:
- ASA Version 9.1(2)
- Interfaces gi0/0 + gi0/2 without any interface errors
The ASA 5515x is configured as a "bump in the wire". In general our setup is working but with beginning of the installation of the firewall the customer faces following connection issues, without the firewall no problems:
- Connections to SAP-Servers behind the MPLS begin to drop, affected all users
- Incoming monitoring sessions (ping/snmp) from central management are facing ping timeouts, connection timeouts
- http downloads are stopping, Customer: it will stop responding and the download will fail.
In general the customer describes it this way: "We do not have the best connection here so once we connected the firewall all the problems are magnified"
I recognized, that we unconfigured the default inspection during initial setup and reconfigured this entry for the cx module. So the the default inspection with all the settings are not present any more... How important are these settings? One phenomen is, that I´ve seen a large numbers of concurrent connections that increased over time. And we already had that situation, that the firewall reached the max-conn count.
Should I try to reconfigure the default inspection, as it ships from factory? And whats the best way to check for problems? What can be the reason for the dropping connections?
I attached a network plan and the firewall config, hopefully, that somebody has an idea. Of course I can provide additional information...
Best Regards
Sebastian

Hi Vibhor,
thanks for your reply. Does this also affect the traffic, even the setting is set to "Monitor Only" ?
Is it recommend to configure the default-inspection rule as a default setting?
Further Question: I´ve read sth. about, that service policy rules must be "reloaded" to take effect, after they have been changed. Is that right and how do I reload them?
Here is an output from sh asp drop, do I have to care about certain values? This values result from two connected users doing some downloads over a 2Mbit connection.
ciscoasa# show asp drop
Frame drop:
Invalid encapsulation (invalid-encap) 10
First TCP packet not SYN (tcp-not-syn) 114
TCP failed 3 way handshake (tcp-3whs-failed) 3
TCP RST/FIN out of order (tcp-rstfin-ooo) 18
Dst MAC L2 Lookup Failed (dst-l2_lookup-fail) 33
L2 Src/Dst same LAN port (l2_same-lan-port) 260
FP L2 rule drop (l2_acl) 2958
Interface is down (interface-down) 9420
No management IP address configured for TFW (tfw-no-mgmt-ip-config) 117
Dropped pending packets in a closed socket (np-socket-closed) 66
Thanks
Sebastian

EBP/CCM XI Catalog scenario; TCP RFC connection EBP to XI doesn't work

Hello All,
i have configured EBP/CCM <> XI Catalog scenario and when i try to execute the test connection for both TCP RFC connections "INTEGRATION_SERVER_<SID>, PLAIN_HTTP_ADAPTER_<SID>" I receive following "ICM_HTTP_CONNECTION_FAILED".
Does anybody know the problem? How can I solve this issue?
Many thanks in advance!
Regards,
Jochen

Hi Chirag Gohil,
first of all many thanks for quick support (also to all!)
I have added the values as notice at your attached weblog
RZ10 (reboot done):
icm/server_port_0 PROT=HTTP,PORT=8005,TIMEOUT=30,PROCTIMEOUT=600
SXMB_ADM:
RUNTIME HTTP_TIMEOUT 10000
but no positive result. The same situation as before!
One additonal helpfull information:
I tryed to execute the respective TCP RFC connection at IE Browser an it works fine!
Targethost: <hostname>
Path Prefix: /sap/xi/engine?type=entry
ServiceNo.: 8005
Logon:
Language: EN
Client: 010
User: <user>
URL at Browser:
http://<hostname>:8005/sap/xi/engine?type=entry
Login with user works fine
XML wegside appeard with comment: "EMPTY_HTTP_REQUEST_RECEIVED"
I think this shows that generall connection works fine!
But why doesn't work the TCP RFC connection?
Many thanks in advance!
Regards,
Jochen

Windows Media Player no sound while playing a avi file in server and client connection using TCP/IP connection

Hello there
I have a problem with my windows media player while using server and client connection by using TCP/IP connection. So when I play a video using Windows Media Player in LabVIew there isn't any sound come out but when I'm playing a video by a Windows Media Player only the sound will come out. Can you help me solve this problem?
I also upload the vi as the reference.
The username for the client is ihsanhaikalz and the password is ganteng
Thanks
Attachments:
Client Remote.vi ‏746 KB
Server Remote.vi ‏1433 KB

Hi ican,
I was looking at your VI's but I cannot seem to pinpoint exactly where you are using Windows Media Player. In order to more quickly assist you, could you please recreate this issue more concisely in a smaller set of VIs. Also, were you able to get sound when you did not use the TCP/IP connection and simply played the files in LabVIEW?
I noticed in a few places that you were using the Play Sound File.VI from the Graphics and Sounds palette. Is that what you are refering to? I noticed there that the file path that you have designated for the song is simply the song title. Instead, this should be a path to where the song is located on your computer.
Also, if you are planning on using Windows Media Player, have you considered using the ActiveX commands for Windows Media Player? Here are a few examples if you are unfamiliar with this functionality.
Example 1 and Example 2.
I hope this helps!
Kim W.
Applications Engineer
National Instruments

SMB Direct connect Issues and error -36 (work around?)

I use the SMB command to connect from a Imac, to a Windows 7 machine.   Typically on a fresh restart of both machines the connection would be quick and fast transfer speeds.   However after a while I would get disconnected and after logging back in, would get slow connections and typically get an error -36 when trying to transfer bigger files.     What I did notice was that when the Windows machine would go to sleep, and come back online, these symptoms would occur.
What I decided to do, was turn off any type of sleep mode and power saving options on the network device. for the windows machine.   As naturally I would still get disconnected every once in a while, once I connect I do not have anymore issues.    This has worked now for the last couple of days, so I assume I can consider this a work around.
It seems that if the SMB connection gets disconnected from the other computer, the Mac will start giving errors.    I am not sure if this is really the mac issue, but this has only happened when I updated to Yosemite.
Let me know if anyone else has this problem, and has success with this solution.

If your MacBook is using wifi, connect your ATV to it using an Ethernet cable and turn on Internet sharing in the Sharing section of the System Preferences for the Ethernet NIC in the MacBook, then set up the ATV for a TCP/IP connection in the General -> Network section of the ATV Settings menu.

Maximum number of tcp/udp connections

I've got a WRT54G and recently I contacted linksys suport due to some problems I was having with
BitTorrent clients(very common issue it seems). I have a home lan with 3 computers,
and if 2 or more of them are on at the same time(even when only 1 is using bittorrent), the connection keeps going
down.
Linksys support told me a lot of routers face this problem since bittorrent works by opening lots of simultaneous
tcp/udp connetions, and one thing I should do is try to limit these connections to a number the router can handle.
Even though I might experience some poor speeds limiting connections, it seems it's all I have left. So, not a
problem at all, except one question which brings us to the purpose of this message:
Approximately HOW MANY TCP/UDP CONNECTIONS can WRT54g handle at the SAME TIME?
Since I'm to share among 3 users, all of which are torrent freaks, I'm gonna have one heck of a hard time tryin' to
guess the maximum number of connections each should have, specially when they're all on at the same time.
Support said they don't have that information. So does anyone out there have a good guess?
And also, does anyone know of any Linksys router (for home use) that is able to work with torrents without any
problem at all?

The wrt54g(s) upto v4 and the wrt54gL use a Linux 2.4.20 kernel.
This Linux-kernel set a max of 1024 connections and a hastable of max 128 buckets, the gs models with 32 Mbyte have 2048/256.
I see three problems:
1. The following patch is not applied to the kernel: Netfilter / connection Tracking Remote DoS, CVE: CAN-2003-0187
2. The hashsize is wrongly set, de default kernel 2.4.20 values are wrong, and may NOT be an even number (128), it should be a prime number.
3. The ratio between hashsize and max amount of connections should be set to 1 and not 8, this to increase performance.
Some improvement is made by Linksys in firmware version 4.21.1 and 4.30.9 (are neerly the same) .
I hope this information helps,
greetings,
jchuit
http://tarifa.sourceforge.net/

Troubleshooting for RPC over https (Outlook Anywhere) connection issue

RPC over https (ROH), well known as Outlook Anywhere, is more frequently used. Even in Exchange 2013, Outlook no longer connects CAS server via MAPI.
In this thread, we will discuss about the troubleshoot checklist about the RPC over https (Outlook Anywhere) connection issue. In order to make it more logical, I’d like to divide the whole troubleshooting to the following processes:
1. Client side to CAS side
2. CAS side to MBX side
[Issues between Client side to CAS side]
In Exchange 2013, Outlook Anywhere is enabled by default. Different from this, Outlook Anywhere in Exchange 2007 and 2010 need to be manually enabled. Thus, please firstly check if the RPC over HTTP component has been installed:
Click Start, and then click Control Panel.
Double-click Programs and Features.
In the left pane of Server Manager, click Features.
In the right pane, click Add Features.
Check if the RPC over HTTP component has been selected.
If the ROH connectivity issue only happens on certain users, the property MAPIBlockOutlookRpcHTTP can be checked:
Get-CASMailbox name | fl MAPIBlockOutlookRpcHttp
2. Confirm if Exchange server is blocked. Ping the Exchange server FQDN on client machine and confirm if it can return the proper IP address.
3. Check if the RPC Proxy server is responding correctly:
rpcping -t ncacn_http -s ExchServer -o RpcProxy=RPCProxyServer -P "user,domain,*" -I "user,domain,*" -H 2 -u 10 -a connect -F 3 -v 3 -E -R none
If 200 code returns, the test is successful.
4. Check if Outlook Anywhere host names are added in the certificate:
To get host names, the following command can be used: get-outlookanywhere |fl *hostname
5. To use the Shell to test Outlook Anywhere connectivity, use the
Test-OutlookConnectivity cmdlet.
[Issues between CAS side to Mailbox side][RZ1]
A. Check if it can connect to store’s port:
RpcPing –t ncacn_http –s ExchangeMBXServer -o RpcProxy=RpcProxyServer -P "user,domain,password" -I "user,domain,password" -H 1 –F 3 –a connect –u 10 –v 3 –e 6001
If it returns as following: Completed 1 calls in 60 ms 16 T/S or 60.000 ms/T, it means the RPC Ping Utility test succeeds.
B. Check if it can Connect to DsProxy Service:
RpcPing –t ncacn_http –s ExchangeMBXServer -o RpcProxy=RpcProxyServer -P "user,domain,password" -I "user,domain,password" -H 2 –F 2 –a connect –u 10 –v 3 –e 6004
If it returns as following: Completed 1 calls in 60 ms 16 T/S or 60.000 ms/T, it means the RPC Ping Utility test succeeds.
C. Check the following registries:
[Disable the auto update]
1).Open Regedit and navigate to:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeServiceHost\RpcHttpConfigurator\RpcHttpConfigurator
2).Set the PeriodicPollingMinutes value to 0.
[Check the RpcProxy ValidPorts]
1).On the RPC proxy server, start Registry Editor (Regedit).
2). In the console tree, locate the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\RpcProxy
3). In the details pane, right-click the ValidPorts subkey, and then click Modify.
4). In Edit String, in the Value data box, type the following information:
ExchangeServer :6001-6002; ExchangeServerFQDN :6001-6002; ExchangeServer :6004; ExchangeServerFQDN :6004
Note:
ExchangeServer is the NetBIOS name of your Exchange server. ExchangeServerFQDN is the fully qualified domain name (FQDN) of your Exchange server. If the FQDN that is used to access the server from the Internet differs from the internal FQDN, you must use
the internal FQDN.
[Check the 6004 port settings in registry]
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeSA\Parameters
Value name: HTTP Port
Value type: REG_DWORD
Value data: 0x1772 (Decimal 6002)
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeSA\Parameters
Value name: Rpc/HTTP NSPI Port
Value type: REG_DWORD
Value data: 0x1774 (Decimal 6004)
D. Check if the RPC ports are used by other applications instead of Exchange by using : netstat –o
Then it will return all active TCP connections and the process ID (PID) for each connection.
After that, please check the application based on the PID on the Processes tab in Windows Task Manager and confirm if it’s Exchange server.
Additionally, ExRCA is a perfect tool to test the whole connection between client side and Mailbox side:
https://testconnectivity.microsoft.com/
1. On the ExRCA website, under Microsoft Office Outlook Connectivity Tests, select Outlook connectivity, and then select Next at the bottom of the page.
2. Enter the required information on the next screen, including email address, domain and user name, and password.
3. Choose whether to use Autodiscover to detect server settings or to manually specify server settings.
4. Accept the disclaimer, enter the verification code, and then select Verify.
5. Select Perform Test.
<Resource for reference>
How does Outlook Anywhere work (and not work):
http://blogs.technet.com/b/exchange/archive/2008/06/20/3405633.aspx
How to use the RPC Ping utility to troubleshoot connectivity issues with the Exchange over the Internet feature in Outlook 2007 and in Outlook 2003:
http://support.microsoft.com/kb/831051
Test Outlook Anywhere Connectivity:
http://technet.microsoft.com/en-us/library/ee633453(v=exchg.150).aspx
[RZ1]It’s part, please re-layout
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I've just restored the M11 to Windows XP with the disks provided and Outlook Anywhere connected without issue. As strange as it sounds, this looks to be isolated to this particular model of laptop and Windows 7.
I've used the same Enterprise copy of Windows 7 and Office on a variety of laptops and pc's and none have come across this problem. The only commonality I can see is the hardware and OS.
Aftery trying to troubleshoot this unsuccessfully with Microsoft tech support for a few hours, they eluded to the fact that this +could+ be a hardware related problem. (driver, adapter properties, etc)

I started to have connectivity issues with a linksys router. The linksys rep suggested ...Check from Apple if they have some particular ports for the Apple TV that we might need to open on the router, anyone have any suggestions for this?

I started to have connectivity issues with a linksys router. The linksys rep suggested ...Check from Apple if they have some particular ports for the Apple TV that we might need to open on the router, anyone have any suggestions for this?

Hi RonWM,
Thanks for visiting Apple Support Communities.
This article lists the ports that are used by the Apple TV:
Apple TV: TCP and UDP ports and protocols used
http://support.apple.com/kb/HT2463
Best Regards,
Jeremy

TCP/IP Connectivity Issue

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